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Just curious... <br /> <br />I am adding a modern humpyard to my layout, and would like to know if anyone has EVER built one of these on their layout. I really want to know how they control the cars descent down into the classification tracks, or if anyone has any ideas how to control it. With a scale grade/hump for the cars to descend down, the car could derail or smash into another car without scale track retarders. Anyone have any ideas?? Thanks again. <br /> <br />-Wolv33
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